what controls the vacuum secondaries? (Denny you are great help and I am sure have realized how bad a learning curve I'm dealing with here, at least I am a quick study). And if it is a model with additional vacuum ports would that take care of the power brakes?

I see on their site lots of options, they have a street performer 750, a double barrel 750 and an Avenger 770. any big difference, or reason to choose one over another?

What RPM did you figure on it? My grandma's boyfriend (I know, sounds funny) has built cars for racing dirt track and he said 750 HOlley tonight when I took him for a ride and we talked about it. I just didn't ask how he knew that one.

Thanks for the help. Got big plans for thsi weekend. (I spent 4 hours last night ripping out the bed, wood and trim pieces). taking out the rear end to have it shortened and get shorter axles, so I can mini-tub and get 10" wide wheels and bigger tires. good stuff.

Red